THIS IS A RUSH TRANSCRIPT. THIS COPY MAY NOT BE IN ITS FINAL FORM AND MAY BE UPDATED.

[17:00:10] JAKE TAPPER, CNN HOST: And that is it for the lead. I'm Jake Tapper. Now I turn to Brianna Keilar. She's right next door in THE SITUATION ROOM -- Brianna.

BRIANNA KEILAR, CNN ANCHOR: Happening now: breaking news. Undue burden. A stunning 5-3 ruling the Supreme Court throws out a Texas law that would have made it much harder for women to get abortions. The landmark decision puts the understaffed court in the middle of the 2016 campaign, and reactions are pouring in.

Campaign recalibration. Donald Trump's campaign is staffing up for the push to November. But the candidate downplays any change from his controversial tactics, saying, "I do what I do." As he launches a new attack on Democratic Senator Elizabeth Warren.

Trailblazers. Elizabeth Warren joins Hillary Clinton on the campaign trail, answering Trump with a blistering attack of her own. Is this tag-team appearance a try-out for the 2016 ticket?

And bracklash, as in Brexit backlash. Brexit causes this as U.S. stocks follow European markets in a steep plunge as frightened investors react to Brexit, Britain's decision to quit the European Union. What does it mean for Americans?

KEILAR: This is the biggest abortion ruling in decades. The Supreme Court today tossed out a Texas law which put tight restrictions on abortion clinics and providers. With the court still at less than full strength after the death of Justice Antonin Scalia, the ruling was 5-3, a majority arguing that Texas law posed an undue burden on women.

The decision is already being felt in the presidential campaign, Hillary Clinton calling it a victory for women across America. Donald Trump has not weighed in, but House Speaker Paul Ryan says the fight to, quote, "promote life" will not stop here.

Trump is speaking out today on other matters. As Republicans fidget over his brash style, Trump suggests he plans no campaign tactics or behavior. And he's slamming Democratic Senator Elizabeth Warren, accusing her of making up her heritage and calling her a racist.

Warren herself unloaded on Trump today, calling him a "small insecure money grubber." That came during her first joint rally with Hillary Clinton and what could be a rehearsal for a possible slot as running mate.

And stocks are plunging with no breaks, as Brexit, Britain's vote to leave the European Union, spooks investors for a second straight day. We'll look at the impact there.

And I'll speak with Republican Congressman Adam Kinzinger. And our correspondents, analysts and guests have full coverage of the day's top stories.

I want to begin now with this major Supreme Court ruling on abortion and CNN justice correspondent Pamela Brown.

This may be the most important abortion case in a generation, Pamela.

PAMELA BROWN, CNN JUSTICE CORRESPONDENT: It is significant, Brianna. In fact considered the most consequential abortion case in two decades. And once again, Justice Kennedy played a significant role, as he has in past abortion case. He sided with the liberal justices to hand abortion rights activists this victory by striking down this Texas law with two controversial provisions that requires doctors at these clinics to have admitting privileges at local hospitals and requires these clinics to have hospital-like standards. And the liberal justice says that these standard aren't even required for more risky procedures than abortion.

And those opposed to the law said that this is a thinly-veiled attempt to end abortion in the state because it would shutter most of the clinics.

Now those who supported the law said this was about women's health and women's safety and that the 5.4 million women of reproductive age in the state would have access to clinics within 150 miles. But it's clear here that the five justices felt like these provisions were unnecessary and would place an undue burden on those women.

There were some strong dissents from justices -- from Justice Thomas, who actually alluded to the fact this case should never have been taken up in the first place and gives positions and these clinics a constitutional right that they do not deserve.

And this will have a huge impact going forward, because there are similar laws already on the books that are being challenged in the lower courts. Of course, this would put those laws in jeopardy, and it would deter other states from passing similar laws to this.

Back to you, Brianna.

KEILAR: All right. Pamela Brown of the Supreme Court. Thank you.

But Donald Trump hasn't weighed in on the Supreme Court decision, but he is speaking out today, stepping up his attacked against Democratic Senator Elizabeth Warren. And while he's refueling his campaign, he's making it clear he's not about to change his campaign style.

PHIL MATTINGLY, CNN CORRESPONDENT: Well, Brianna, Donald Trump appears to be in the middle. His campaign just clearly making moves to professionalize as it gears up for the general election. But the candidate still unwilling to shed the persona that got him this far. Just 22 days away from the Republican convention, it's leading to a split personality of sorts that has top GOP officials increasingly uneasy.

(BEGIN VIDEOTAPE)

MATTINGLY (voice-over): Donald Trump tonight shifting his focus back on the general election after a two-day swing through Scotland this weekend to attend to one of his golf courses.

(on camera): Is beating Hillary Clinton a par 3 or a par 5, sir?

DONALD TRUMP (R), PRESUMPTIVE PRESIDENTIAL NOMINEE: I think it would be easy. Certainly, here it would be very easy. Have a good night.

We're going up to the 14th tee if anyone want to see. They say one of the great sights of the world, if you want to see it. These are among the largest dunes anywhere in the world. It's really spectacular. If you'd like to see it, follow me.

MATTINGLY (voice-over): The presumptive Republican nominee appearing to ratchet back his proposal for a blanket ban on Muslims entering the U.S., suggesting he would consider allowing Muslims in from countries not typically associated with terrorism, as long as they're, quote, "vetted strongly."

UNIDENTIFIED MALE: Would a Muslims coming from Scotland or Great Britain, would you tweak your policy on that?

MATTINGLY: Even as he insisted today he has no plans to change, telling NBC News, quote, "I do what I do. I've listened to this for a long time. The beginning of the primaries, 'He should do this. He should do that.' I won in a landslide."

Something he hammered home by continuing to focus personal attacks on top Clinton surrogate Elizabeth Warren, in the very same interview, continuing to call her Pocahontas. Trump saying, quote, "She made up her heritage, which is racist. I think she's a racist, actually, because what she did is very racist."

Trump scheduling a major economic speech Tuesday in Pennsylvania, a swing state he has pledged to win in November.

TRUMP: We're going to win Pennsylvania in the general.

MATTINGLY: The billionaire also holding a second event Tuesday in another key battleground state, Ohio. Trump, from staffing to fundraising to strategy, moving quickly to get

his campaign on track for the general election, amid continuing concerns from the highest levels of the GOP.

SEN. MITCH MCCONNELL (R-KY), MAJORITY LEADER: I think there's no question that he's made a number of mistakes over the last few weeks. I think they're beginning to right the ship.

GEORGE STEPHANOPOULOS, ABC NEWS: I didn't hear you say whether or not you thought he was qualified.

MCCONNELL: Look, that will be up to the American people to decide.

MATTINGLY: Those concerns bolstered by poll numbers that are consistent on two fronts: a national lead for Hillary Clinton, and Trump surpassing Clinton when it comes to unfavorable ratings.

Trump is firing back, questioning the polls and continuing to attack Hillary Clinton for her position on the historic Brexit vote, saying on Twitter, she quote, "has no sense of markets and such bad judgment."

With the Republican convention rapidly approaching, Trump continues to struggle to unite the party, telling the "New York Times," "If there's no endorsement, then I would not invite them to speak."

Texas Senator Ted Cruz and Ohio Governor John Kasich will not get convention speaking slots if they don't endorse the New York billionaire.

RONALD REAGAN, FORMER PRESIDENT OF THE UNITED STATES: The use of force is always and only a last resort.

TRUMP: I would bomb the (EXPLETIVE DELETED) out of them.

GRAPHIC: GOP Delegates: choose your values, follow your conscience.

MATTINGLY: And moves to halt efforts by Cruz and Kasich supporters to block Trump, securing the nomination in Cleveland.

PAUL MANAFORT, TRUMP CAMPAIGN ADVISOR: Our campaign is organized. We will have a good convention, and we're confident that we are not behind the Clinton campaign.

(END VIDEOTAPE)

MATTINGLY: And Brianna, aides to both John Kasich and Ted Cruz are making clear neither of the former presidential candidates actually sought a speaking slot at the convention, nor do they plan on seeking any such slot in the future.

One of the interesting elements here is John Kasich. Obviously, he is a popular home state governor. This is a state where he defeated Donald Trump by nearly 250,000 votes in March. As for what he'll be doing, Brianna, aides say it'll be focused on down ballot races. KEILAR: All right. Phil Mattingly, thank you so much. And joining

me now to talk more about Donald Trump is Republican Congressman Adam Kinzinger of Illinois. He's a former Air Force pilot who served in Iraq and Afghanistan. Much to talk about.

But I do want to ask you about this new phase, Congressman, because Donald Trump, he may say that there's no 2.0. But we're certainly seeing him temper his rhetoric, at least at times. What do you make of this?

REP. ADAM KINZINGER (R), ILLINOIS: Well, I hope he is. I hope this is long-term. Every time I've gotten to the point where I think he is tempering his rhetoric he's not. He says something else. And I thought, you know, the unfortunate comments about come to his golf course because the pound's falling and that's great for his golf course was -- was, you know, one of those, for instance.

But I've always said myself, personally, I'm not a never Trump guy. I want to obviously support the Republican nominee. But as an American before a Republican, I need to see some of that.

So my hope is, you know, truly that we're seeing Trump 2.0. That he's taking very seriously the fact that he's running for Abraham Lincoln and Ronald Reagan's job and leader of the free world. And if, in fact, that's the case, I think the next few weeks will tell. If it's not, I think the next few weeks will tell that, too.

KEILAR: And so you're looking to see if perhaps -- you've been very critical of him, but you're -- you would love to endorse, at least in theory, the Republican nominee here.

Donald Trump is now saying that his Muslim ban would only apply to, quote, "terrorist countries." He says that he wouldn't carry out mass deportations. We haven't heard him talk a whole lot about the border wall lately. Are those shifts enough for you, if he continues this over the next couple weeks, to consider endorsing him?

KINZINGER: I think if we see a shift in tone, I think if we see a shift to presidential, I think if we see a shift in some of those corrosive policies. You know, the Muslim ban, what you have now is really a war within Islam, where they're defining what Islam is and to say things about banning all Muslims -- all Muslims frankly takes the side of Islam we don't want to win, those that would marry church and state together; and it feeds into that narrative.

So I mean, look, I've always agreed that places where you have hostilities of war, we need to have some pretty intense scrutiny. But to say, you know, cut all Muslims off is frankly un-American.

And so, you know, look, if this is the beginning of a new Donald Trump, we have, you know, four months, five months in front of us. We'll be able to tell from that.

But I'm not going to jump on it immediately because of a few good things. I want to see a real change in his narrative. Again, I'm an American before I'm a Republican. I'm Republican because I believe in what the Republican Party believes is best for the country.

KEILAR: Donald Trump said there, when asked about what about a Muslim from Scotland, he said quote, "Wouldn't bother me." Do you think that he can pivot away from the Muslim ban? He's obviously trying to rhetorically, but do you think that he effectively can?

KINZINGER: You know, I don't know. It's hard to tell. I mean, I think it's going to -- this is really on him, just like uniting the Republican Party right now is on Donald Trump. I mean, as you see, as the Democrats had their fight, and you have Hillary and Bernie now, Hillary is going after Bernie supporters, trying to include them in the fold. This is going to be on Donald Trump to do it.

So I think if he's consistent with his message of saying, "We need to protect the country, but that doesn't include a blanket ban on Muslims; it doesn't include mass deportations," then maybe over time he can overcome it.

But there's no doubt there was a lot of damage done. But again, I would love to get to the point where I can support the Republican nominee, but it's going to, for me at least, it's going to take some time.

KEILAR: Will you be going to the convention?

KINZINGER: You know, I'm undecided right now. I may go for a few days. I may not. That's -- that remains to be seen. I haven't made that decision, and I have another couple weeks to do it.

KEILAR: So what's the -- what would require you to shift towards going to the convention? The same thing that you -- the same things you talk about in being able to endorse Donald Trump? The changes you would want to see?

KINZINGER: I think that's some of it. You know, look, if I went to the convention, it would be because I want to have a purpose. I want to -- I want to be able to, you know, unite the Republican Party. Not just for myself.

KEILAR: Can you go without endorsing him?

KINZINGER: yeYes, it's possible. But see, look, if somebody goes, and they haven't necessarily endorsed them, sometimes you can just create more of a problem, because you know, you're there and you have a party that's trying to unite behind the candidate, who was rightfully nominated by our party. Our party rightfully nominated Donald Trump. I'm not taking that away from him.

But if I can't get there, you know, you don't want to be a distraction to a party that's trying to unite. So it's a decision I'll have to make, and I'm sure I'll know more in a couple weeks.

KEILAR: Mitch McConnell, the Senate majority leader, asked if Donald Trump is qualified, said he'd leave it up to voters to decide, which -- it really speaks volumes, what he doesn't say there. What is the message that it sends to you? I mean, in a way, do you feel like you have a little cover, because Mitch McConnell isn't supporting him?

KINZINGER: Well, maybe some cover. I don't -- I don't feel like I need cover. I've been pretty out there on what I think is right. I mean, I was elected to this job not just to get re-elected. I was elected because, you know, I'm really passionate about my country. It's why I serve my country; it's why I do what I do.

In terms of, you know, is he qualified, well, constitutionally, yes, he is. But I think people have to make a decision on if they reach their level of qualification, some of the things he's said, if that makes them comfortable.

And again, if he pivots, I mean, everybody, you know, to an extent pivots in a general election. Great. He's got to, you know, bring 51 percent of the Americans on his side, which he's not at right now.

So it will be interesting to watch over the next few months. That's for sure.

KEILAR: All right. Stay with me. I have much more to ask you, Congressman Kinzinger. What does Syria have to do with Brexit? We know that you think it has quite a bit. We'll talk about that next.

(COMMERCIAL BREAK)

[17:19:15] KEILAR: We're back now with Republican Congressman Adam Kinzinger of Illinois. He's a former Air Force pilot who served in Iraq and Afghanistan.

And I know that you've been looking at what's happened in Britain, Brexit. And I suspect that you think there is some lessons that the GOP should be taking from this.

KINZINGER: Yes, I think there's some lessons. I think the larger thing is, you know, look, what has led to this? There's a lot of consternation around the globe. It typically happens, too, for that a tale of 10 to 15 years after a major economic crisis. People begin to turn inwards. You saw it after the Great Depression. You're seeing it now.

And so I think the key, you know, what I would say, is you don't want to feed insecurities of people. It's about reiterating to people the reason, for instance, for the United States to be involved around the globe. The fact that we have a mission to be an example to people of what self-governance is. And -- and so there is some lessons.

You know, you can kind of play to people's insecurities, or you can lead them out of that insecurity and show them a way out. And that's, I think, a lesson to take.

KEILAR: You think that -- I know you blame the Obama administration, how it handled Syria for the sort of trickle down that caused the feelings, the sentiment that we've seen in Britain. And I do wonder at this point where you stand on that.

Because I know that you were advocating for military intervention, for targeted strikes in Syria, in 2013. Is that still the solution? Do you support this recommendation by 51 State Department officials to use these targeted strikes against the Assad regime?

KINZINGER: Yes, I think you have to. I mean, the reality is Assad will never regain control of all of Syria. So even if he stays in power, he has a fraction of Syria, and the rest of Syria will remain Afghanistan pre-9/11. It is the instability that Assad caused which has led to not only half a million people dying but to the, you know, rooting of ISIS in Raqqah and everything else.

And I think the bigger problem is the mass migration out of Syria. We're not talking about immigration; we're talking about mass migration out of Syria, into Europe, has created this real concern. It's a clash of cultures that has existed on a pretty massive scale, and that's led to a lot of the rise of this idea of put up the walls, put up the borders and get out of the E.U.

And so I think the failure to intervene in Syria definitely has a part in what led to Brexit, because even if, you know, they'd have still had the vote without it, I think there's a number of people that their concern was migration, and it has led to this problem.

So I think you have to intervene. There's no good answers. But I will tell you this conflict will not burn itself out over time. It's like a volcano that keeps spewing ash and lava and spreading to other countries.

KEILAR: All right. Congressman Adam Kinzinger, thank you so much, joining us live from Chicago. We appreciate it.

And coming up, Hillary Clinton and Elizabeth Warren campaigning together for the first time. Is this an audition for a possible running mate?

(BEGIN VIDEO CLIP)

SEN. ELIZABETH WARREN (D), MASSACHUSETTS: That's who Donald Trump is. The guy who wants it all for himself. And watch out. Because he will crush you into the dirt to get whatever he wants. That's who he is.

(END VIDEO CLIP)

(COMMERCIAL BREAK)

[17:26:50] KEILAR: There's new speculation Hillary Clinton might tap Senator Elizabeth Warren to be her vice-presidential running mate. They appeared together on the campaign trail for the first time, with Warren assailing presumptive Republican nominee Donald Trump.

CNN national correspondent Suzanne Malveaux has details on this.

Suzanne, some people say that Warren's appearance seemed a bit like an audition.

SUZANNE MALVEAUX, CNN NATIONAL CORRESPONDENT: Yes. I mean, I talked with several campaign operatives, who told me they were watching closely today the body language between the two dynamic female leaders; watching closely how the crowd would respond; and mindful of whether or not Warren would overshadow Clinton. For the reaction of the audience, they told me that the Clinton/Warren pairing did not disappoint.

(BEGIN VIDEOTAPE)

WARREN: I'm with her. Yes, her.

MALVEAUX (voice-over): Hillary Clinton and Elizabeth Warren joining forces today for the first time in the campaign.

WARREN: Donald Trump says he'll make America great again. It's -- it's right there. No. It's stamped right on the front of his goofy hat. You want to see goofy? Look at him in that hat.

MALVEAUX: Today's event in Ohio fueling speculation that Warren could be selected as Clinton's running mate. The Massachusetts senator using the opportunity to unleash a blistering critique of Donald Trump.

WARREN: What kind of man roots for people to lose their job, to lose their homes, to lose their life's savings? I'll tell you what kind of a man. A small insecure money-grubber who fights for no one but himself.

MALVEAUX: And using Trump's controversial comments throughout the primary season against him.

HILLARY CLINTON (D), PRESUMPTIVE PRESIDENTIAL NOMINEE: I do just love to see how she gets under Donald Trump's thin skin.

MALVEAUX: Clinton is hoping that Warren will also help her win over more progressive voters in the Democratic Party, who backed Bernie sanders during the primary. The former secretary of state today striking a populist tone.

CLINTON: We must have an economy that works for everyone again, not just those at the top.

MALVEAUX: Clinton and Warren today sounding very much united. But that has not always been the case. Warren remained neutral throughout the Democratic primary fight, only endorsing Clinton earlier this month.

And in a 2004 interview with PBS, she criticized Clinton's position on a piece of bankruptcy legislation.

WARREN: She has taken money from the groups, and more to the point, she worries about them as a constituency.

MALVEAUX: Now with Warren's help, Clinton hopes to block Trump from the White House, slamming the billionaire over his support for Brexit...

CLINTON: Within 24 hours, Americans lost $100 billion from our 401(k)s. He tried to turn a global economic challenge into an infomercial.

MALVEAUX: ... releasing a new television ad to hammer it home.

TRUMP: When the pound goes down, more people are coming to Turnberry.

(END VIDEOTAPE)

[17:30:05] MALVEAUX: All this as a new report was released today by the Democratic members of the Select Committee on Benghazi, which slammed Republicans for what they call grave abuses in the handling of the investigation into the Benghazi attacks that led to the death of four Americans. This is an issue, of course, that Republicans have continued to press against Clinton throughout the campaign, Brianna.

KEILAR: All right. Suzanne Malveaux, thank you.

Let's get more now on all of this with CNN political commentator S.E. Cupp; CNN senior legal analyst Jeffrey Toobin; CNN chief political correspondent Dana Bash; and CNN political commentator and contributing editor to "The Atlantic," Peter Beinart.

OK. First I want to know what you guys think about this pairing: how it went today; whether we're talking about Hillary Clinton having a pretty good sidekick -- there did seem to be enthusiasm -- or the chances that Elizabeth Warren would really be a vice-presidential pick.

DANA BASH, CNN CHIEF POLITICAL CORRESPONDENT: Well, she's -- she's, according to people who we talked to -- and I'm sure you're hearing this, too, Bri, because you covered the Clinton campaign -- she's really being vetted, for real. It's not just a trial balloon; it's an actual vetting.

There was so much energy in that room, and you have been to way more Hillary Clinton events than I have. But especially comparing to Bernie Sanders, there was a big difference in terms of that enthusiasm that clearly she has with Elizabeth Warren in the room.

And they seem to have chemistry. Chemistry on the campaign trail is important. The question is, she's somebody who's methodical. What about chemistry in a potential administration? That's a whole different ball game.

JEFFREY TOOBIN, CNN SENIOR LEGAL ANALYST: And what's also true about vice-presidential candidates is most of the time, they campaign separately. They do not campaign together. And the question then is, what does Elizabeth Warren bring to a ticket that someone else might not bring? BASH: Massachusetts.

TOOBIN: And it's not clear. Yes, right. She needs help in Massachusetts, she's a lot bigger problems than Elizabeth Warren. But that's the question: Is there -- is the -- is the support just overlapping, or is there a chance of expanding what she might not get?

S.E. CUPP, CNN POLITICAL COMMENTATOR; Well, I'm obviously not a fan of Elizabeth Warren's politics, but I think that would be a mistake for Hillary Clinton. I think Elizabeth Warren is everything that Hillary Clinton is not. She's legitimately progressive. She is authentic. She's charismatic; she connects with people. I think having Elizabeth Warren would really sort of point out some of Hillary's flaws and deficiencies. I think she would overshadow her.

TOOBIN: But would that make -- make up for those faults, deficiencies?

CUPP: No. As you say, they're campaigning mostly separately.

TOOBIN:

CUPP: And -- go ahead, Peter.

PETER BEINART, CNN POLITICAL COMMENTATOR: I think the case for Elizabeth Warren is that she not only energizes the progressive wing, the Bernie Sanders folks, the young voters that they need to turn out big, but she also potentially does well with potential Donald Trump supporters in the industrial Midwest, because her brand of progressivism is very anti-globalization. It's very populist. And if you're worried that Donald Trump's appeal, potentially, is in winning states like Pennsylvania, Ohio, Michigan, Wisconsin, she would be an effective campaigner there.

I think the reason that I think I still don't think she'll be picked is that I think the Clinton people worry about her loyalty. I don't think they think that she's entirely a team player, and loyalty is extremely important to Hillary Clinton.

CUPP: I think Peter is analyzing the votership in a very academic and probably correct academic scholarly way, but I don't think there are Trump voters in the Midwest who would be turned to a Hillary Clinton ticket, because Elizabeth Warren is on it. I just think that makes no sense to me. All due respect, Peter. I understand your analysis. But I've met the Trump voters. You're not going to peel them off with Elizabeth Warren.

BEINART: Well, I mean, look. I think they don't like Hillary Clinton. There's no question about it.

But there is -- I think there's a category of people who are deeply anti-globalization, who may -- who might be potentially attracted to Trump, and I think Elizabeth Warren is a very compelling person for those people. She makes Hillary Clinton look further from Wall Street. KEILAR: Does she make Bernie Sanders irrelevant in that Bernie

Sanders has not come out yet to campaign with Hillary Clinton? He's made these sounds about, "OK, the writing is on the wall. I'm not going to be the nominee." But now, in a way, does she sort of fill in for Bernie Sanders?

TOOBIN: Certainly, the latest polling information suggests that virtually all the Bernie Sanders people are going to wind up voting for Hillary Clinton.

I think, you know, he is an important force. He has a lot of money still. He has a list of contributors that he could use to bring other progressive candidates along. But in terms of the presidential race, I don't think Bernie Sanders is very important any more.

BASH: And I think Bernie Sanders can thank Bernie Sanders for that. Because this event today...

KEILAR: He could have done it.

BASH: ... very well could have been Hillary Clinton and Bernie Sanders.

KEILAR: Hillary and Bernie.

BASH: And instead it was Elizabeth Warren.

KEILAR: Some reporting -- this is fresh. Here we go. CNN's Jim Acosta and Gloria Borger are reporting that Donald Trump is preparing a new policy to be rolled out soon on a temporary immigration ban. This would be a ban that's no longer focused on Muslims but instead on people coming from countries who train and equip terrorists. Can he make that pivot?

CUPP: It's -- on the face of it, it's ridiculous. He might be able to make the pivot optically and rhetorically, but that's a ridiculous proposal. You know, just look at some of the recent European terrorist attacks, perpetrated by Europeans. Yes, Muslims. But Europeans. How would we stop a homegrown European terrorist from coming over if they're coming from France or Brussels or Great Britain? It's just a -- it's a non-solution. It's not serious.

And I think it really shows that he's sort of cowing to some of the -- the leaders in his party who think, "OK, you can't go this far." Well, instead of going that far he's taking it back. He's not getting any more substantive, though, or taking these issues any more seriously. He's just sort of, like I said, cowing under the face of this pressure.

KEILAR: Peter, what do you think?

BEINART: Yes. I agree. You know, maybe there was a moment after he locked up the nomination where there could have been a real kind of pivot, and people were willing to kind of take a second look.

But you know, he's really -- he's really wrecked that opportunity. I mean, he's used this period very, very badly. And so now, you know, he's going to say, ""Well, it's not an entire Muslim ban." He's been saying it was a ban on all Muslims for months and months and months. So he's not that credible.

And as S.E. -- exactly as S.E. says, the new proposal doesn't make a whole lot more sense either, because there have been big terrorist attacks committed by people who are French citizens.

CUPP: Right.

BEINART: So it really makes no more sense. I don't see how this is going to help him a lot.

KEILAR: Dana, you nodded when Peter said, "He could have maybe made some sort of pivot after he was clearly going to be the nominee."

BASH: Not just that, exactly, but there was the specific moment, the speech that he gave after the Orlando massacre, where he doubled down on this.

But he also, in that speech, did expand and said it's not -- didn't just talk about, you know, Muslims from around the world. But then he went on to talk about specific countries.

That weekend I actually was filling in for Jake Tapper on "STATE OF THE UNION," and I interviewed Jeff Sessions. And he started to name -- I pressed him on it. He started to name names of the countries. Talking about Egypt and other -- and other countries that they would potentially put in this category. But didn't pull back on the overall most controversial part of Trump's proposal, which we've been talking about for months now.

TOOBIN: But I thought this was, like, the basis of his campaign, keeping Muslims out. I mean...

CUPP: Mexicans, too, Jeff.

TOOBIN: Well, I mean -- but I mean, how do you change a fundamental -- it's like, you know, the fence is obviously a big part of his campaign, too. Is it now going to be a...

KEILAR: The wall. He does call it the wall.

TOOBIN: The wall. Is it going to be a moat instead? I mean, you've got to have like a standard set of...

CUPP: The concept. He actually has -- he has -- he has proven himself to be so incredibly malleable that to whomever's ear he is trying to appeal, he will say something that completely flies in the face of the last thing he just said.

This should be a red flag, I think, to voters and his supporters. Alas, it has not been throughout the duration of this campaign.

KEILAR: And we'll see how they respond to this idea. S.E., Jeff, Dana, Peter thank you all. And we have some breaking news next: financial turmoil, political

chaos and a shocking rise in hate crimes. We'll go live to London for the latest on the Brexit fallout. And I'll talk to CNN's Richard Quest about that.

Plus, horror stories from survivors of the attack on the Pulse nightclub. Should police have moved on the gunman sooner?

(COMMERCIAL BREAK)

[17:43:22] KEILAR: Stocks in the U.S. and around the world are tumbling on the financial uncertainty created by British voters' decision to leave the European Union. CNN business correspondent Richard Quest is in London for us.

And Richard, we've been looking at the stock market these last couple days. Not good news. Down almost 900 points over the last two days.

RICHARD QUEST, CNN CORRESPONDENT: Yes. And for good reason. And you know, the dollar is clearly much, much stronger as the pound and the euro weaken because of uncertainty. That dollar strength is going to hit big U.S. exporters, from Ford to General Electric to Caterpillar, and ultimately, it's going to take its toll on the U.S. economy.

And then you've just got simply the uncertainty. So many big U.S. corporations have subsidiaries, have major operations across Europe. Some will be in the U.K.; some will be in continental Europe. Everybody is wondering how this plays out.

And Brianna, one thing we do know: we're not going to have an answer tomorrow or next week or next month, because the new British prime minister won't be in place until September the 2nd. So we've got several months of deep uncertainty, and that's what you're seeing in the market.

KEILAR: Richard, tell us about some of these M.P.'s who were promoting the leave campaign. They were making certain promises about what the -- basically the dues to the E.U. would now be spent on. And it seems like they're backpedaling pretty quickly now on a number of those pledges. Is this a big case of promises broken?

[17:45:02] QUEST: Oh, it's a case of obfuscation. During the campaign they said that the 350 million pounds were to spend -- that goes to the EU would be spent on the National Health Service or socialized medicine system. Now they're saying, well, maybe some of it will be. But not all of it. And we can't guarantee it.

Because Brianna, here's the problem. They promise that money to everybody. They promised it to rural farmers for agriculture. To pensioners, to the health service, to education, to industrial development. You name it. At some point during the election, or during the referendum they said that money would go to the -- to some cause. But the one that they said most of it would go to was the health service. And now they are having to back track. But guess what? Too late. The referendum has been held. The voters won by the leaves and that's the way it's going to remain. A bitter taste as a result.

KEILAR: And is there any chance -- I know that this isn't technically binding, but it seems like in a way it sort of is, right? It doesn't seem like there is a chance that this may not actually happen.

QUEST: Oh, constitutional and experts and geeks will spend hours over bottles of wine pontificating the possibility that somehow the MPs back in that building will refuse to give weight to the -- it ain't going to happen. If it does, I'll eat a hat and I'll do it live on air. The reality is -- you know, they are going to move forward with some form of Brexit and try and cobble together some form of deal. Anything else is just constitutional pie in the sky.

KEILAR: It is always fun to talk with you, Richard Quest. Thank you so much. For staying up late for us there in London.

And coming up, some chilling any details from inside that Orlando terror attack, including what the gunman did before the final police assault.

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[17:51:35] KEILAR: There are new details emerging about the Orlando massacre including horrific new accounts from survivors and they're raising questions about how and why the standoff with the gunman lasted so long.

CNN's Brian Todd has more on this. And you're learning some pretty disturbing new information -- Brian.

BRIAN TODD, CNN CORRESPONDENT: We are, Brianna. Tonight some survivors are talking about how the gunman Omar Mateen ignored the pleas of some victims for him to spare their lives. And the sister of a man who was killed inside the Pulse nightclub is telling us she believes her brother bled to death and that a faster response might have saved him.

(BEGIN VIDEOTAPE)

TODD (voice-over): New questions tonight about the response from the Orlando Police to the carnage inside the Pulse nightclub. A key question raised by a victim's sister, did the police wait too long to take out Omar Mateen? Lakitra Justice's brother Eddie sent texts to their mother from inside one of the club's bathrooms where Mateen shot several victims. He texted, quote, "He's coming. I'm going to die." Eddie Justice didn't make it. His sister tells CNN tonight she believes a faster response could have saved Eddie.

NERELSHA JUSTICE-MACKLIN, VICTIM'S SISTER: I'm assuming that he bled to death. And I just feel as if they would have gotten in there quicker, he probably would have lived.

TODD: A survivor who was in one of the bathrooms says there were people who were wounded and didn't die immediately.

MIGUEL LEIVA, ORLANDO SHOOTING SURVIVOR: There were so many people choking on their own blood and people just getting dehydrated and sweating and bleeding out.

TODD: The Orlando Police have maintained they did everything they could to rescue victims during the three hours between the initial shots and the end of the standoff. During those three hours police say they didn't feel like they could take Mateen out.

CHIEF JOHN MINA, ORLANDO POLICE: This started as an active shooter situation. Our officers took action and then transition into a barricade gunman hostage situation.

TODD (on camera): What did they have to do then?

JIM BUEERMANN, POLICE FOUNDATION: So at that point, especially when the suspect is talking to them, and that was the case here, they're going to try to settle the situation down, they're going to try to contain him, and they're going to try to get him to calm down in the hopes that he'll release the hostages and ultimately surrender.

TODD (voice-over): There are also questions about the end of the standoff. At about 5:00 a.m., police set off an explosion trying to blow a hole through one of the walls. That didn't work completely. So a few minutes later they breached the wall with an armored vehicle. Then shot and killed Mateen.

Patience Carter who was hiding in a bathroom described what Mateen did after the explosion and before the final assault.

PATIENCE CARTER, ORLANDO SHOOTING SURVIVOR: He said, hey, you, to someone on the floor inside the bathroom, and shot them. Shot another person and then shot another person who happened to be directly behind me.

TODD (on camera): Anything they could have or should have done differently there?

BUEERMANN: I don't think so. This is one of the dangers when you have to go in and take out the hostage taker and try to rescue the hostages. There's always the possibility that the hostage taker is going to start harming the hostages.

(END VIDEOTAPE)

TODD: Jim Bueermann and the Orlando Police point out there were other complications. Misinformation being given to the police at the time by the gunman himself. Omar Mateen said he had explosive vests that he was going to put on some hostages. He gave police a 15-minute deadline. Now it turned out he didn't have any that explosive vests but that information had to play into the police decision to go in and get him at the moment they did -- Brianna.

KEILAR: Brian Todd, thank you.

Coming up, is her campaign appearance with Hillary Clinton a tryout for the 2016 ticket? Senator Elizabeth Warren launches a blistering new attack on Donald Trump.

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[17:55:05] SEN. ELIZABETH WARREN (D), MASSACHUSETTS: Hillary Clinton will be the next president of the United States because she knows what it takes to beat a thin-skinned bully who is driven by greed and hate.

(END VIDEO CLIP)

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KEILAR: Happening now. Breaking news. Substantial obstacle in a major victory for abortion rights access. The Supreme Court strikes down the Texas law, saying it would severely limit access to the procedure. Tonight the legal and political impact of this landmark ruling.

Ban backpedaling. CNN has learned Donald Trump is set to rule out a new policy replacing his controversial ban on Muslims entering the U.S. This as his poll numbers slip and many Republicans grow more nervous. I'll ask Trump's national spokeswoman about this shift in strategy.